Mine is long and thick, most girls will find it to be one of the bigger ones she would have in her lifetime.
As for why it could be hurting?
On the girl : It might be due to her cycle and closer to her period even when fully aroused her cervix doesn’t move out of the way therefore a longer one will bump into it fairly easily and some girls will have more sensitive cervix than others. This is the main one.
The other is your body have become used to his style of foreplay and it doesn’t fully arouse you as much any longer but he won’t have a way of knowing as you would still be wet just the internals aren’t fully relaxed.
If she’s on some recent meds or sometimes if she had a disagreement with him prior then it could also cause issues during arousal.
On him, he may have previously controlled himself by not fully inserting and now decided not to control any longer.
Maybe the position used wasn’t suitable for both your body types.
Finally this one happened to me, been with the same girl for 4 years but over the last 2 years I been hitting the gym and lost weight as well as gained muscles, it can be that if he had done heavy lifting especially squats then the penis can be harder than before and might also be a bit longer and thicker.
Width can lead to some discomfort if you wet enough or acclimatized to it. But length can result in impacting your cervix, which will hurt.
Maybe you needed to use some lube or maybe your body wasn't prepared or as turned in as you thought maybe it was and that contributed to the pain. It's also possible previous time he wasn't fully hard and this time he was
Are you spreading wider for him cause you want it deeper or your pounding him harder than you have before?
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Could be time of the month and your uterus is in a slightly different position.
His penis might of gotten bigger. There are certain Medical Procedures that are low risk that can increase size.
Also if you waited longer then usual in between sex with him then your pussy got tighter. Your pussy should stay looser if you fuck him often.
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